Michael O'Neill
Acting
- Born:
- 1947-05-29
- Place of birth:
- Montgomery, Alabama, USA
Biography
From Wikipedia, the free encyclopedia. Michael O'Neill (born May 29, 1951) is an American actor. With a career stretching through three decades, he usually portrays senior law enforcement or military officers. He is perhaps best known for his role as Special agent Ron Butterfield, the head of President Josiah Bartlet's Secret Service detail, on The West Wing. He played CTU Administrative Director Richard Walsh in the first two episodes of 24. He played Sgt. Maj. Ron Cheals in the CBS action-drama series The Unit. He starred in the Season Six 2 part Finale of Grey's Anatomy as the broken widower who holds the hospital hostage with a 9mm while pursuing the doctors responsible for unplugging his wife. His most notable film performances occur in Seabiscuit, Secondhand Lions, Transformers, Dancer, Texas Pop 81, Traffic, Sea of Love, A Quiet Little Marriage, Nothing But the Truth, and Green Zone. O'Neill graduated from Auburn University in 1974. After attending Auburn he spent time under the tutelage of actor Will Geer and his daughter, Ellen, at Theatricum Botanicum in Los Angeles before moving to New York to pursue his career there.
Known For
Filmography
War of the Worlds
Bride Hard
Happy Face
Happy's Place
Tracker
Air
Fire Country
Echoes
Outer Range
Cold Call
The Stand at Paxton County
Messiah
Clemency
Indivisible
The Romanoffs
Danger One
Tom Clancy's Jack Ryan
The Resident
S.W.A.T.
Shooter
This Is Us
11.22.63
Manhattan
Extant
The Grim Sleeper
Dallas Buyers Club
Rectify
Bates Motel
Vegas
Scandal
J. Edgar
Law & Order: LA
Rizzoli & Isles
The Glades
Green Zone
Flying Lessons
FlashForward
NCIS: Los Angeles
Nothing But the Truth
Leverage
A Quiet Little Marriage
The Mentalist
Fringe
Sons of Anarchy
Crazy
Transformers
Army Wives
The Nine
The Unit
Commander in Chief
Ghost Whisperer
Criminal Minds
Close to Home
Prison Break
Grey's Anatomy
Numb3rs
Around the Bend
Boston Legal
LAX
American Crime
NCIS
Secondhand Lions
Seabiscuit
Dreamcatcher
Without a Trace
CSI: Miami
24
Crossing Jordan
Traffic
The Legend of Bagger Vance
Boston Public
Roswell
The West Wing
ATF
The Mod Squad
Dancer, Texas Pop. 81
Virtual Obsession
Standoff
Ally McBeal
The Shining
The Practice
Millennium
The Sunchaser
JAG
Bushwhacked
Awake to Danger
Beyond Betrayal
ER
Chicago Hope
One West Waikiki
Blind Justice
Victim of Love: The Shannon Mohr Story
Diagnosis: Murder
The X-Files
For Their Own Good
Lorenzo's Oil
Jennifer Eight
The Gun in Betty Lou's Handbag
An Unremarkable Life
Sea of Love
Ghost Story